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<p>[QUOTE=&quot;desertgem, post: 581069, member: 15199&quot;]The main thing to remember is that&nbsp; Air-Tite (tm) is <b>not</b> air tight. They are good holders, no doubt about that, but if one wishes to eliminate rather than just reduce toning, you can not depend on them or slabbed holders. Intercept (tm) premise is to attract and bind contaminants that might cause toning ( sulfides, etc.), but they are not rechargeable. If you have low levels of contaminants, they might do the job for 20 years or more. If you live in a town with a coal burning plant, maybe only 3 -5 years.</p><p><br /></p><p>I keep expecting someone to produce a &quot; Toning Risk Test strip&quot; where collectors could place the strip inside of rooms, safes, vaults, etc. and have a good assessment of the risk of toning. </p><p><br /></p><p>Jim[/QUOTE]</p><p><br /></p>

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